NDLI: A compact differential bandpass filter with controllable common-mode transmission zero based on Coupled Cross-Shaped Resonator with short termination

Content Provider	IEEE Xplore Digital Library
Author	Hui Wang Kam-Weng Tam Sut-Kam Ho Wen Wu
Copyright Year	2014
Description	Author affiliation: Fac. of Sci. & Technol., Univ. of Macau, Macao, China (Kam-Weng Tam; Sut-Kam Ho) \|\| Ministerial Key Lab. of JGMT, Nanjing Univ. of Sci. & Technol., Nanjing, China (Hui Wang; Wen Wu)
Abstract	A compact differential bandpass filter (BPF) based on Coupled Cross-Shaped Resonator (CCSR) with short termination is presented in this paper. The differential-mode (DM) and common-mode (CM) equivalent half circuits of proposed CCSR are given and discussed. In DM operation, a wide passband is designed from 4.0 GHz to 5.0 GHz with a fractional bandwidth (FBW) of 22% Under CM condition, controllable transmission zero is realized easily by adjusting the length of short terminated stubs. In addition, the DM responses are unaffected while the CM transmission zero is designed independently. A prototype differential BPF operated at 4.5 GHz with more than 45 dB average CM suppression in DM passband has been realized to validate the proposed concept and theory. The maximum CM rejection is as high as 52 dB due to the controllable zero. The circuit size of this filter is merely $0.12λ_{0}^{2},$ showing its compactness advantage.
Sponsorship	IEEE Microwv. Theory Tech. Soc.
Starting Page	1
Ending Page	4
File Size	3094046
Page Count	4
File Format	PDF
ISBN	9781479934034
DOI	10.1109/IEEE-IWS.2014.6864219
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2014-03-24
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Band-pass filters Wireless communication Differential bandpass filter Resonator filters Common-mode suppression Miniaturized size Capacitance Filtering theory Wideband Equivalent circuits
Content Type	Text
Resource Type	Article

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